Condenser Checker C-1

Heathkit (Brand), Heath Co.; Benton Harbor (MI)

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  • Year
  • 1948 ?
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 80758
    • alternative name: Heath Company

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 2
  • Power type and voltage
  • Alternating Current supply (AC) / 105-125 Volt
  • from Radiomuseum.org
  • Model: Condenser Checker C-1 - Heathkit Brand, Heath Co.;
  • Shape
  • Tablemodel, with any shape - general.
  • Notes

  • The is a modified version of the original schematic is for the Heathkit C-1 Condenser Checker, the modification replaced part numbers with actual component values. Please note that the network of 30k ohm resistors should drop voltages equally. The 20 VDC switch setting should per the schematic produce an actual voltage of 100 VDC. However, the actual voltage on a capacitor under test would be reduced by the voltage required by the neon lamp.

  • Net weight (2.2 lb = 1 kg)
  • 4 lb (4 lb 0 oz) / 1.816 kg
  • Price in first year of sale
  • 19.50 US$
  • Mentioned in
  • -- Schematic (Heathkit ads)
  • Literature/Schematics (1)
  • Chuck Penson: "Heathkit Test Equipment Products", page 2-01
  • Author
  • Model page created by Bernd Pötzsch. See "Data change" for further contributors.

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The model Condenser Checker is part of the collections of the following members.

 Forum

Forum contributions about this model: Heathkit Brand,: Condenser Checker C-1

Threads: 1 | Posts: 1

The Heathkit C-1 uses a 12A6 as rectifier and a 1629 eye tube.  Resistance and capacitance are measured in a direct-reading bridge circuit. The eye opens when the correct resistance or capacitance is selected by way of the main dial potentiometer. As with all such bridge devices, accuracy is dependent on the precision of the standard capacitors and resistors in the device.

An electrolytic can be reformed in step-wise fashion. The neon bulb (below the eye tube) lights when the reforming current is about 2 mA or more. The reforming process starts with the voltage step switch set at the lowest voltage at which the neon bulb lights. As reforming progresses, the neon bulb will go out when reforming current drops below 2 mA. At that point the next higher voltage step can be selected until the capacitor shows full proper voltage on an external voltmeter. When the reforming process is complete,  the tester's power is switched off and the step switch moved to the "R" position to quickly bring the voltage across the capacitor back to zero. The "R" setting places a 1000 ohm resistor across the test leads.
 
Model C-1 was replaced by model C-2 in January 1950 according to the notation on the C-2 schematic.

Rich Post, 31.Jan.22

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